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The alarm at a fire station rings and a 94-kg fireman, starting from rest, slides down...

The alarm at a fire station rings and a 94-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.5 m). Just before landing, his speed is 1.3 m/s. What is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?

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Answer #1

Given:

Mass of the fireman,

The initial height of the fireman,

The final speed of the fireman,

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When the fireman slides down the pole after starting from rest, his initial potential energy is converted into kinetic energy. Also, some portion of the initial potential energy is lost due to friction.

ANSWER:

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